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<div class="title">QZXingFilter.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright 2017 QZXing authors</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * You may obtain a copy of the License at</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *      http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * limitations under the License.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#ifndef QZXingFilter_H</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#define QZXingFilter_H</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;QObject&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;QAbstractVideoFilter&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;QDebug&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;QFuture&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;QZXing.h&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="struct_simple_video_frame.html">   37</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_simple_video_frame.html">SimpleVideoFrame</a></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;{</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    QByteArray data;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    QSize size;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    QVideoFrame::PixelFormat pixelFormat;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <a class="code" href="struct_simple_video_frame.html">SimpleVideoFrame</a>()</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        : size{0,0}</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        , pixelFormat{QVideoFrame::Format_Invalid}</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    {}</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="struct_simple_video_frame.html#a6e6bff50e72a9b5e424038d482e41475">   48</a></span>&#160;    <span class="keywordtype">void</span> <a class="code" href="struct_simple_video_frame.html#a6e6bff50e72a9b5e424038d482e41475">copyData</a>(QVideoFrame &amp; frame)</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    {</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        frame.map(QAbstractVideoBuffer::ReadOnly);</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="keywordflow">if</span>(data.size() != frame.mappedBytes())</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        {</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;            qDebug() &lt;&lt; <span class="stringliteral">&quot;needed to resize&quot;</span>;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            qDebug() &lt;&lt; <span class="stringliteral">&quot;size: &quot;</span> &lt;&lt; data.size() &lt;&lt; <span class="stringliteral">&quot;, new size: &quot;</span> &lt;&lt; frame.mappedBytes();</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;            data.resize(frame.mappedBytes());</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;        }</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        memcpy(data.data(), frame.bits(), frame.mappedBytes());</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        size = frame.size();</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        pixelFormat = frame.pixelFormat();</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        frame.unmap();</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    }</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;};</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="class_q_z_xing_filter.html">   70</a></span>&#160;<span class="keyword">class </span><a class="code" href="class_q_z_xing_filter.html">QZXingFilter</a> : <span class="keyword">public</span> QAbstractVideoFilter</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;{</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_q_z_xing_filter_runnable.html">QZXingFilterRunnable</a>;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    Q_OBJECT</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        Q_PROPERTY(<span class="keywordtype">bool</span> decoding READ isDecoding NOTIFY isDecodingChanged)</div><div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="class_q_z_xing_filter.html#a27f032211d1d4eea1affed0e7618436d">   76</a></span>&#160;        Q_PROPERTY(<a class="code" href="class_q_z_xing.html">QZXing</a>* <a class="code" href="class_q_z_xing_filter.html#a27f032211d1d4eea1affed0e7618436d">decoder</a> READ getDecoder)</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        Q_PROPERTY(QRectF captureRect MEMBER captureRect NOTIFY captureRectChanged)</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    signals:</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        <span class="keywordtype">void</span> isDecodingChanged();</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        <span class="keywordtype">void</span> decodingFinished(<span class="keywordtype">bool</span> succeeded, <span class="keywordtype">int</span> decodeTime);</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordtype">void</span> decodingStarted();</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="keywordtype">void</span> captureRectChanged();</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    private slots:</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        <span class="keywordtype">void</span> handleDecodingStarted();</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        <span class="keywordtype">void</span> handleDecodingFinished(<span class="keywordtype">bool</span> succeeded);</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    private: </div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <a class="code" href="class_q_z_xing.html">QZXing</a> <a class="code" href="class_q_z_xing_filter.html#a27f032211d1d4eea1affed0e7618436d">decoder</a>;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        <span class="keywordtype">bool</span> decoding;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        QRectF captureRect;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <a class="code" href="struct_simple_video_frame.html">SimpleVideoFrame</a> frame;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        QFuture&lt;<span class="keywordtype">void</span>&gt; processThread;</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    public:  </div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        explicit <a class="code" href="class_q_z_xing_filter.html">QZXingFilter</a>(QObject *parent = 0);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        virtual ~<a class="code" href="class_q_z_xing_filter.html">QZXingFilter</a>();</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="keywordtype">bool</span> isDecoding() {<span class="keywordflow">return</span> decoding; }</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        <a class="code" href="class_q_z_xing.html">QZXing</a>* getDecoder() { <span class="keywordflow">return</span> &amp;<a class="code" href="class_q_z_xing_filter.html#a27f032211d1d4eea1affed0e7618436d">decoder</a>; }</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        QVideoFilterRunnable * createFilterRunnable();</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;};</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="class_q_z_xing_filter_runnable.html">  108</a></span>&#160;<span class="keyword">class </span><a class="code" href="class_q_z_xing_filter_runnable.html">QZXingFilterRunnable</a> : <span class="keyword">public</span> QObject, <span class="keyword">public</span> QVideoFilterRunnable</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;{</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    Q_OBJECT</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        <span class="keyword">explicit</span> <a class="code" href="class_q_z_xing_filter_runnable.html#ae8ed468a251cc2daa6b251346c6c33e5">QZXingFilterRunnable</a>(<a class="code" href="class_q_z_xing_filter.html">QZXingFilter</a> * filter);</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="class_q_z_xing_filter_runnable.html">QZXingFilterRunnable</a>();</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        QVideoFrame <a class="code" href="class_q_z_xing_filter_runnable.html#a30cc32aa9a434b5d2ebfe3fcda4ad8cb">run</a>(QVideoFrame * input, <span class="keyword">const</span> QVideoSurfaceFormat &amp;surfaceFormat, RunFlags flags);</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="class_q_z_xing_filter_runnable.html#a319ed1ef7b808ee6098e013c4f3387eb">processVideoFrameProbed</a>(<a class="code" href="struct_simple_video_frame.html">SimpleVideoFrame</a> &amp; videoFrame, <span class="keyword">const</span> QRect&amp; captureRect);</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keyword">private</span>:</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        QString decode(<span class="keyword">const</span> QImage &amp;image);</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <span class="keyword">private</span>:</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <a class="code" href="class_q_z_xing_filter.html">QZXingFilter</a> * filter;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;};</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="preprocessor">#endif // QZXingFilter_H</span></div><div class="ttc" id="class_q_z_xing_filter_runnable_html_a319ed1ef7b808ee6098e013c4f3387eb"><div class="ttname"><a href="class_q_z_xing_filter_runnable.html#a319ed1ef7b808ee6098e013c4f3387eb">QZXingFilterRunnable::processVideoFrameProbed</a></div><div class="ttdeci">void processVideoFrameProbed(SimpleVideoFrame &amp;videoFrame, const QRect &amp;captureRect)</div><div class="ttdef"><b>Definition:</b> QZXingFilter.cpp:189</div></div>
<div class="ttc" id="class_q_z_xing_filter_html"><div class="ttname"><a href="class_q_z_xing_filter.html">QZXingFilter</a></div><div class="ttdoc">Video filter is the filter that has to be registered in C++, instantiated and attached in QML...</div><div class="ttdef"><b>Definition:</b> QZXingFilter.h:70</div></div>
<div class="ttc" id="struct_simple_video_frame_html_a6e6bff50e72a9b5e424038d482e41475"><div class="ttname"><a href="struct_simple_video_frame.html#a6e6bff50e72a9b5e424038d482e41475">SimpleVideoFrame::copyData</a></div><div class="ttdeci">void copyData(QVideoFrame &amp;frame)</div><div class="ttdef"><b>Definition:</b> QZXingFilter.h:48</div></div>
<div class="ttc" id="class_q_z_xing_html"><div class="ttname"><a href="class_q_z_xing.html">QZXing</a></div><div class="ttdef"><b>Definition:</b> QZXing.h:43</div></div>
<div class="ttc" id="class_q_z_xing_filter_html_a27f032211d1d4eea1affed0e7618436d"><div class="ttname"><a href="class_q_z_xing_filter.html#a27f032211d1d4eea1affed0e7618436d">QZXingFilter::decoder</a></div><div class="ttdeci">QZXing decoder</div><div class="ttdoc">Attributes. </div><div class="ttdef"><b>Definition:</b> QZXingFilter.h:76</div></div>
<div class="ttc" id="class_q_z_xing_filter_runnable_html_ae8ed468a251cc2daa6b251346c6c33e5"><div class="ttname"><a href="class_q_z_xing_filter_runnable.html#ae8ed468a251cc2daa6b251346c6c33e5">QZXingFilterRunnable::QZXingFilterRunnable</a></div><div class="ttdeci">QZXingFilterRunnable(QZXingFilter *filter)</div><div class="ttdef"><b>Definition:</b> QZXingFilter.cpp:70</div></div>
<div class="ttc" id="class_q_z_xing_filter_runnable_html"><div class="ttname"><a href="class_q_z_xing_filter_runnable.html">QZXingFilterRunnable</a></div><div class="ttdoc">A new Runnable is created everytime the filter gets a new frame. </div><div class="ttdef"><b>Definition:</b> QZXingFilter.h:108</div></div>
<div class="ttc" id="class_q_z_xing_filter_runnable_html_a30cc32aa9a434b5d2ebfe3fcda4ad8cb"><div class="ttname"><a href="class_q_z_xing_filter_runnable.html#a30cc32aa9a434b5d2ebfe3fcda4ad8cb">QZXingFilterRunnable::run</a></div><div class="ttdeci">QVideoFrame run(QVideoFrame *input, const QVideoSurfaceFormat &amp;surfaceFormat, RunFlags flags)</div><div class="ttdoc">This method is called whenever we get a new frame. It runs in the UI thread. </div><div class="ttdef"><b>Definition:</b> QZXingFilter.cpp:81</div></div>
<div class="ttc" id="struct_simple_video_frame_html"><div class="ttname"><a href="struct_simple_video_frame.html">SimpleVideoFrame</a></div><div class="ttdoc">This is used to store a QVideoFrame info while we are searching the image for QRCodes. </div><div class="ttdef"><b>Definition:</b> QZXingFilter.h:37</div></div>
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